1. NAME AND TITLE
RASC-2DPI: Two-Dimensional Removal Diffusion Code Reactor Shielding Design Code
Kawasaki Heavy Industries, Ltd. and Power Reactor and Nuclear Fuel Development Corporation,
through the OECD NEA Data Bank, Gif-sur-Yvette, France.
3. CODING LANGUAGE AND COMPUTER
FORTRAN IV; IBM 370.
4. NATURE OF PROBLEM SOLVED
RASC-2DPI is a two-dimensional removal-diffusion program taking into account the line of sight
technique for the treatment of void zones.
5. METHOD OF SOLUTION
The finite difference expression is solved by iteration using accelerated successive line over-relaxation. The removal source is handled by Gaussian integration three times. Void zones are treated
using the line of sight method on the assumption that the neutrons emitted into the void will have a
cosine shaped directional distribution.
6. RESTRICTIONS OR LIMITATIONS
There are no restrictions except for computer size. The program is written for R-Z or X-Y
geometry. Void geometries are limited to only straight, annular, or cylindrical ducts.
7. TYPICAL RUNNING TIME
No study has been made by RSIC of typical running times for RASC-2DPI.
8. COMPUTER HARDWARE REQUIREMENTS
The program is operable on the IBM 360/370 series and requires a minimum of 200 K bytes.
9. COMPUTER SOFTWARE REQUIREMENTS
A FORTRAN IV compiler and a standard IBM OS Version 21 operating system are required.
I. Suzuki, "A User's Manual for RASC-2DPIA Two-Dimensional Removal-Diffusion Code," PNC N241 77-24 (August 30, 1977).
Y. Tanaka, I. Suzuki, M. Takemura, and T. Suzuki "Applicability of Two-Dimensional Shielding Code," JAPFNR-167 (August 1974).
Y. Tanaka, I. Suzuki, and N. Otani, "Evaluation of the Two-Dimensional Shielding Code for a
Fast Reactor Shield Design and Its Application," JAPFNR-68 (March 1972).
11. CONTENTS OF CODE PACKAGE
Included are the referenced documents and one (1.2MB) DOS diskette which contains the source
codes and sample problem input and output.
12. DATE OF ABSTRACT
KEYWORDS: TWO-DIMENSIONS; NEUTRON; REMOVAL-DIFFUSION; MULTIGROUP